Abstract: Cationic polymers are provided that comprise monomeric units of Formula (V). (V) Each asterisk (*) indicates an attachment position to another monomeric unit; R is hydrogen or methyl; each R2 is each independently an alkyl, aryl, or a combination thereof; L is a linking group comprising an alkylene group; and +R3 is a cationic nitrogen-containing group free of any N—H bonds. Membranes formed from said cationic polymers, devices including such membranes, and methods of making such cationic polymers are also provided.

Abstract: An electrically conductive bonding tape includes a conductive self-supporting first layer conductive in each of three mutually orthogonal directions and including conductive opposing first and second major surfaces, an conductive second layer coated on the first major surface of the self-supporting first layer and having at least 60% by weight of nickel, the second layer having an exposed major surface facing away from the first major surface of the self-supporting first layer and exposing at least some of the nickel in the second layer, and a conductive adhesive third layer bonded to the second major surface of the self-supporting first layer opposite the second layer. The adhesive third layer is conductive in at least one of the three mutually orthogonal directions and includes a plurality of conductive elements dispersed in an insulative material, at least some of the conductive elements physically contacting the self-supporting first layer.

Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.

Abstract: Cationic polymers are provided that comprise monomeric units of Formula (V). (V) Each asterisk (*) indicates an attachment position to another monomeric unit; R is hydrogen or methyl; each R2 is each independently an alkyl, aryl, or a combination thereof; L is a linking group comprising an alkylene group; and +R3 is a cationic nitrogen-containing group free of any N—H bonds. Membranes formed from said cationic polymers, devices including such membranes, and methods of making such cationic polymers are also provided.

Abstract: An electrically conductive bonding tape includes a conductive self-supporting first layer conductive in each of three mutually orthogonal directions and including conductive opposing first and second major surfaces, an conductive second layer coated on the first major surface of the self-supporting first layer and having at least 60% by weight of nickel, the second layer having an exposed major surface facing away from the first major surface of the self-supporting first layer and exposing at least some of the nickel in the second layer, and a conductive adhesive third layer bonded to the second major surface of the self-supporting first layer opposite the second layer. The adhesive third layer is conductive in at least one of the three mutually orthogonal directions and includes a plurality of conductive elements dispersed in an insulative material, at least some of the conductive elements physically contacting the self-supporting first layer.

Abstract: A cationic copolymer comprises the divalent monomer units: wherein: each Ar1 independently represents phenylene; each L independently represents a direct bond or wherein each R1 independently represents an alkyl group having 1 to 4 carbon atoms, and each R2 independently represents an alkylene group having from 1 to 6 carbon atoms, and each Z? represents a non-interfering anion; each Ar2 independently represents an optionally substituted divalent aryl ring, with the proviso that if L represents a direct bond, then Ar2 represents an optionally substituted cationic divalent aryl ring accompanied by Z; each R3 independently represents H or an alkyl group having 1 to 6 carbon atoms; and each D independently represents a direct bond or Ar2, wherein adjacent D and L are not both direct bonds, and wherein if L is a direct bond, then D is Ar2. The cationic copolymer can be free-radially cured and used in a membrane.

Abstract: A dihaloorganosilane is represented by the formula (I): Each X independently represents Cl, Br, or I. Each Ar1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl. Each R1 independently represents an alkylene group having from 2 to 18 carbon atoms. Each R2 independently represents methyl or ethyl. Each R3 independently represents an alkylene group having from 1 to 18 carbon atoms. Each R4 independently represents an alkylene group having from 2 to 18 carbon atoms, and n is an integer in a range of 0 to 5, inclusive. Ionic organosilanes preparable from the dihaloorganosilanes are represented by the formula (II): Membrane compositions and membranes containing the ionic organosilanes are also disclosed.

Abstract: Cationic copolymers having pendant N-allylimidazolium-containing groups are provided. The cationic copolymers can be used, for example, to provide anion exchange membranes for use in electrochemical cells such as fuel cells, electrolyzers, batteries, and electrodialysis cells. The anion exchange membranes typically have good mechanical properties and ionic conductivity.

Abstract: A crosslinkable copolymer is provided. The crosslinkable copolymer has pendant cationic nitrogen-containing groups with some, but not all, of these pendant groups further including a (meth)acryloyl group. The (meth)acryloyl groups can react to form a crosslinked copolymer that is ionically conductive. The crosslinked copolymer can be used to provide an anion exchange membrane that can be used in electrochemical cells such as fuel cells, electrolyzers, batteries, and electrodialysis cells.

Abstract: Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.

Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.

Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.

Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.

Abstract: Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.

Abstract: Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.

Abstract: Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.